mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-03 18:31:04 +00:00
33574c17ee
Contributed by Agustina Arzille <avarzille@riseup.net> Amos Jeffries <squid3@treenet.co.nz> David Michael <fedora.dm0@gmail.com> Marco Gerards <marco@gnu.org> Marcus Brinkmann <marcus@gnu.org> Neal H. Walfield <neal@gnu.org> Pino Toscano <toscano.pino@tiscali.it> Richard Braun <rbraun@sceen.net> Roland McGrath <roland@gnu.org> Samuel Thibault <samuel.thibault@ens-lyon.org> Thomas DiModica <ricinwich@yahoo.com> Thomas Schwinge <tschwinge@gnu.org> * htl: New directory. * sysdeps/htl: New directory. * sysdeps/hurd/htl: New directory. * sysdeps/i386/htl: New directory. * sysdeps/mach/htl: New directory. * sysdeps/mach/hurd/htl: New directory. * sysdeps/mach/hurd/i386/htl: New directory. * nscd/Depend, resolv/Depend, rt/Depend: Add htl dependency. * sysdeps/mach/hurd/i386/Implies: Add mach/hurd/i386/htl imply. * sysdeps/mach/hurd/i386/libpthread.abilist: New file.
86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
/* pthread_mutex_trylock. Hurd version.
|
|
Copyright (C) 2016-2018 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License
|
|
as published by the Free Software Foundation; either
|
|
version 2 of the license, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with this program; if not, see
|
|
<http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <pthread.h>
|
|
#include <stdlib.h>
|
|
#include <assert.h>
|
|
#include <pt-internal.h>
|
|
#include "pt-mutex.h"
|
|
#include <hurdlock.h>
|
|
|
|
int
|
|
__pthread_mutex_trylock (pthread_mutex_t *mtxp)
|
|
{
|
|
struct __pthread *self;
|
|
int ret;
|
|
|
|
switch (MTX_TYPE (mtxp))
|
|
{
|
|
case PT_MTX_NORMAL:
|
|
ret = lll_trylock (&mtxp->__lock);
|
|
if (ret)
|
|
ret = EBUSY;
|
|
break;
|
|
|
|
case PT_MTX_RECURSIVE:
|
|
self = _pthread_self ();
|
|
if (mtx_owned_p (mtxp, self, mtxp->__flags))
|
|
{
|
|
if (__glibc_unlikely (mtxp->__cnt + 1 == 0))
|
|
return EAGAIN;
|
|
|
|
++mtxp->__cnt;
|
|
ret = 0;
|
|
}
|
|
else if ((ret = lll_trylock (&mtxp->__lock)) == 0)
|
|
{
|
|
mtx_set_owner (mtxp, self, mtxp->__flags);
|
|
mtxp->__cnt = 1;
|
|
}
|
|
else
|
|
ret = EBUSY;
|
|
|
|
break;
|
|
|
|
case PT_MTX_ERRORCHECK:
|
|
self = _pthread_self ();
|
|
if ((ret = lll_trylock (&mtxp->__lock)) == 0)
|
|
mtx_set_owner (mtxp, self, mtxp->__flags);
|
|
else
|
|
ret = EBUSY;
|
|
break;
|
|
|
|
case PT_MTX_NORMAL | PTHREAD_MUTEX_ROBUST:
|
|
case PT_MTX_RECURSIVE | PTHREAD_MUTEX_ROBUST:
|
|
case PT_MTX_ERRORCHECK | PTHREAD_MUTEX_ROBUST:
|
|
self = _pthread_self ();
|
|
ROBUST_LOCK (self, mtxp, __lll_robust_trylock);
|
|
break;
|
|
|
|
default:
|
|
ret = EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
strong_alias (__pthread_mutex_trylock, _pthread_mutex_trylock)
|
|
strong_alias (__pthread_mutex_trylock, pthread_mutex_trylock)
|